sf (version 1.0-17)

st_bbox: Return bounding of a simple feature or simple feature set

Description

Return bounding of a simple feature or simple feature set

Usage

# S3 method for bbox
is.na(x)
st_bbox(obj, ...)
# S3 method for POINT
st_bbox(obj, ...)
# S3 method for MULTIPOINT
st_bbox(obj, ...)
# S3 method for LINESTRING
st_bbox(obj, ...)
# S3 method for POLYGON
st_bbox(obj, ...)
# S3 method for MULTILINESTRING
st_bbox(obj, ...)
# S3 method for MULTIPOLYGON
st_bbox(obj, ...)
# S3 method for GEOMETRYCOLLECTION
st_bbox(obj, ...)
# S3 method for MULTISURFACE
st_bbox(obj, ...)
# S3 method for MULTICURVE
st_bbox(obj, ...)
# S3 method for CURVEPOLYGON
st_bbox(obj, ...)
# S3 method for COMPOUNDCURVE
st_bbox(obj, ...)
# S3 method for POLYHEDRALSURFACE
st_bbox(obj, ...)
# S3 method for TIN
st_bbox(obj, ...)
# S3 method for TRIANGLE
st_bbox(obj, ...)
# S3 method for CIRCULARSTRING
st_bbox(obj, ...)
# S3 method for sfc
st_bbox(obj, ...)
# S3 method for sf
st_bbox(obj, ...)
# S3 method for Spatial
st_bbox(obj, ...)
# S3 method for Raster
st_bbox(obj, ...)
# S3 method for Extent
st_bbox(obj, ..., crs = NA_crs_)
# S3 method for numeric
st_bbox(obj, ..., crs = NA_crs_)
NA_bbox_
# S3 method for bbox
format(x, ...)

Value

a numeric vector of length four, with xmin, ymin, xmax

and ymax values; if obj is of class sf, sfc, Spatial or Raster, the object returned has a class bbox, an attribute crs and a method to print the bbox and an st_crs method to retrieve the coordinate reference system corresponding to obj (and hence the bounding box). st_as_sfc has a methods for bbox objects to generate a polygon around the four bounding box points.

Format

An object of class bbox of length 4.

Arguments

x

object of class bbox

obj

object to compute the bounding box from

...

for format.bbox, passed on to format to format individual numbers

crs

object of class crs, or argument to st_crs, specifying the CRS of this bounding box.

Details

NA_bbox_ represents the missing value for a bbox object

Examples

a = st_sf(a = 1:2, geom = st_sfc(st_point(0:1), st_point(1:2)), crs = 4326)
st_bbox(a)
st_as_sfc(st_bbox(a))
st_bbox(c(xmin = 16.1, xmax = 16.6, ymax = 48.6, ymin = 47.9), crs = st_crs(4326))